/*

 * Licensed to the Apache Software Foundation (ASF) under one

 * or more contributor license agreements.  See the NOTICE file

 * distributed with this work for additional information

 * regarding copyright ownership.  The ASF licenses this file

 * to you under the Apache License, Version 2.0 (the

 * "License"); you may not use this file except in compliance

 * with the License.  You may obtain a copy of the License at

 *

 *     http://www.apache.org/licenses/LICENSE-2.0

 *

 * Unless required by applicable law or agreed to in writing, software

 * distributed under the License is distributed on an "AS IS" BASIS,

 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

 * See the License for the specific language governing permissions and

 * limitations under the License.

 */

package com.bff.gaia.unified.sdk.metrics;



import com.google.auto.value.AutoValue;

import com.bff.gaia.unified.sdk.annotations.Experimental;

import com.bff.gaia.unified.sdk.annotations.Experimental.Kind;



import javax.annotation.Nullable;



import static com.bff.gaia.unified.vendor.guava.com.google.common.base.Preconditions.checkNotNull;



/** The name of a metric. */

@Experimental(Kind.METRICS)

@AutoValue

public abstract class MetricNameFilter {



  /** The inNamespace that a metric must be in to match this {@link MetricNameFilter}. */

  public abstract String getNamespace();



  /** If set, the metric must have this name to match this {@link MetricNameFilter}. */

  @Nullable

  public abstract String getName();



  public static MetricNameFilter inNamespace(String namespace) {

    return new AutoValue_MetricNameFilter(namespace, null);

  }



  public static MetricNameFilter inNamespace(Class<?> namespace) {

    return new AutoValue_MetricNameFilter(namespace.getName(), null);

  }



  public static MetricNameFilter named(String namespace, String name) {

    checkNotNull(name, "Must specify a name");

    return new AutoValue_MetricNameFilter(namespace, name);

  }



  public static MetricNameFilter named(Class<?> namespace, String name) {

    checkNotNull(namespace, "Must specify a inNamespace");

    checkNotNull(name, "Must specify a name");

    return new AutoValue_MetricNameFilter(namespace.getName(), name);

  }

}